Boltzmon!
By: William Sleator.
Edition: 1st ed.
Publisher: Dutton Children's Books
Published: 1999
Place of publication: New York
Language: eng
Number of pages: 150
Subjects: Brothers and sisters -- Fiction.; Space and time -- Fiction.
Genres: Fiction.
Description: A boltzmon, remnant of a black hole, materializes in eleven-year-old Chris's bedroom and transports him to a parallel world, where he encounters the bitter woman his overbearing older sister will become, after his death, if he cannot convince her to change.